//
// Copyright (C) 2005-2021 Alfresco Software Limited.
//
// This file is part of the Alfresco Content Mobile iOS App.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import AVFoundation
import UIKit

extension UIDeviceOrientation {
    var cameraOrientation: AVCaptureVideoOrientation {
        switch self {
        case .portraitUpsideDown:
            return .portraitUpsideDown
        case .landscapeLeft:
            return .landscapeRight
        case .landscapeRight:
            return .landscapeLeft
        case .faceUp, .faceDown:
            return interfaceOrientation()
        default:
            return .portrait
        }
    }
    
    var captureOrientation: AVCaptureVideoOrientation {
        switch self {
        case .portraitUpsideDown:
            return .portraitUpsideDown
        case .landscapeLeft:
            return .landscapeLeft
        case .landscapeRight:
            return .landscapeRight
        case .faceUp, .faceDown:
            return interfaceOrientation()
        default:
            return .portrait
        }
    }
    
    var imageOrientation: UIImage.Orientation {
        switch self {
        case .portraitUpsideDown:
            return .left
        case .landscapeLeft:
            return .up
        case .landscapeRight:
            return .down
        default:
            return .right
        }
    }
    
    var imageOrientationMirrored: UIImage.Orientation {
        switch self {
        case .portraitUpsideDown:
            return .left
        case .landscapeLeft:
            return .down
        case .landscapeRight:
            return .up
        default:
            return .right
        }
    }

    private func interfaceOrientation() -> AVCaptureVideoOrientation {
        if let orientation = UIApplication.shared.windows
            .first(where: { $0.isKeyWindow })?.windowScene?.interfaceOrientation {
            switch orientation {
            case .landscapeLeft:
                return .landscapeLeft
            case .landscapeRight:
                return .landscapeRight
            case .portrait:
                return .portrait
            case .portraitUpsideDown:
                return.portraitUpsideDown
            default:
                return .portrait
            }
        } else {
            return .portrait
        }
    }
}
